Cytec Technology Corporation

James S Lee

Samuel S Wang

Lino Giovanni Magliocco

D R Nagaraj

Ferdinand E Orbeta

D R Nagari

William Schildwachter

Screw head

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is a polymeric mixture of a polysaccharide and a material comprising recurring units of the formula: ##STR1## wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35%, y represents a residual mole fraction of from about 1 to 50% and z represents a residual mole fraction of from about 0 to about 50%.

Method of depressing non-sulfide silicate gangue minerals

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is a mixture of a polysaccharide and a graft polymer of polyvinyl alcohol and an acrylamide.

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Camarillo, CA, United States of America

James S Lee